I'm having problems transferring files to my Aldiko Book Reader app.

If you're having trouble transferring a NetGalley title to the Aldiko Book Reader app:

It is easy to have a typo in the Adobe ID or password--be sure to check that what you have in your Adobe Digital Editions and in the Aldiko Book Reader app are correct. There are a limited number of devices that Adobe activates with your Adobe ID.

More information about the Aldiko Book Reader app can be found on their website.